Wood-pulp machine



(No Model.) 3 Sheets-Sheet 1. W. CURTIS.

WOOD PULP MACHINE.

Patented Aug. 2, 1887.

(No Model.) 3 eeeee s-S nnnn 2.

' W. CURTIS.

I WOOD PULP MACHINE. No. 367,504. Patented Aug..?., 1887.

3 Sheets-Sheet 3.

Patented Aug (No Model.) W. CURTIS.

WOOD PULP MACHINE, No. 367,504.

ll IIl/l/llI/I/Illl Nv PETERS, Phalu-Lllbagraplwr, wam n mn. I)v C.

UNITED STATES PATENT OFFICE.

WARREN CURTIS, OF CORINTH, NEW YORK.

WOOD-PULP MACHINE.

SPECIFICATION forming part of Letters Patent No. 367,504, dated August2, 1887.

Application filed July 16, 1886.

To all whom it may concern.-

Be it known that I, WARREN CURTIS, of Corinth, in the county of Saratoga and State of New York, have invented certain new and useful Improvements in \Vood-lulp Machines, of which the following is a specification.

This invention relates to certain new and useful improvements in that class of machines in which revolving stones or other abrading 1 devices are used for grinding wood into pulp,

The object of my invention is to provide a machine in which a piece or pieces of stone or other abrading material can be used to great advantage and the wood ground in any desired direction to the grain, and which machine is simple in construction, strong and durable, and produces a superior long-fibered pulp with a comparatively small amount of power.

The invention consists in a frame or disk mounted to revolve in the horizontal .plane, in which frame or disk the pieces of stone or other abrading parts are held, and against which stones the blocks of wood are pressed by suitable means or devices, the revolving frame being surrounded by a gutter for catchingthe pulp.

The invention consists, further, in the combination, with said frame or disk, of suitable devices for supporting the same and counter acting the pressure of the block-pressers.

The invention also consists in the construction and combination of parts and details, as will be fullydescribed. hereinafter,and pointed out in the claims.

In the accompanying drawings, Figure 1 is a cross-sectional view of my improved woodpulp machine. Fig. 2, is a plan view of the same, some of the pressers being removed. Fig. 3 is a plan view of a revolving frame in which the abrading-pieees are held, parts be ing taken out. Fig. 4 is a plan view of the frame on which the revolving platform revolves. Fig. 5 is a detail cross-sectional view of the hydraulic cushion. Fi 6 is a plan view of the same. Fig. 7 is a longitudinal sectional view of one of the presscrs. Fig. 8 is a side view of the sleeve inwhich the main shaft revolves, and Fi 9 is a plan view of the same.

Similar letters of reference indicate corresponding parts.

On the upper end of the vertical shaft 0 the be used on the inside and outside.

Serial No. 208,184. (No nrodcl.)

circular frame or platform D is rigidly mounted to revolve in a horizontal plane, said frame being provided at its outer edge with an inwardly and upwardly inclined flange, 0 against the inner side of which the beveled edges of the stone blocks 0 are placed, said blocks being held and pressed against the said flange'by the clips or plates to, fastened to the sides of a recess, D, formed around the hub D of the wheel or frame D. If desired, the flange C may be provided along the inside edge of the circular platform and the clips a passed along the outside edge, or clips may The stone sections a, which have beveled edges, are placed close together, so that their upper surfaces form an annular abrading-surface, as shown in Fig. 3, the tops of all the stones be-- ing flush. At the bottom of the flange C an outwardly-projecting lip, 0 is formed, which extends over the inner edge of a fixed circular trough, O, surrounding the revolving platform or frame D, and provided with a spout or outlet, G.

The pulp that is formed on the stones flows over the outeredges of the same into the troughs O, and the functions of the lip c are to prevent the pulp flowing down between the edge of the revolving frame D and the inner edge of the gutter or trough G. Said trough is held by a frame, F, surrounding the stone and carrying a top plate, E, on which the boxes B are fastened for receiving the blocks of wood, the bottom parts of the said boxes extending through the plate E and down to within a short distance from the tops of the stones.

The boxes B are provided with laterallyprojecting flanges 13 some distance above the lower ends, which flanges are above the top plate, E, of the casing, and through said flanges screws B" are passed and rest on the top plate, E, by means of which screws the boxes B can be raised or lowered, so that their lower edges will be a short distance above the upper surface of the abrading piece or pieces. In case the stones or other abradingpieces wear off, the boxes are lowered, and when fresh stones or abrading-pieces are fastened in the revolving frame the boxes must be raised. Said boxes are provided with openings 0, through which the blocks of wood can be passed into them. On the top of each boxB abloclr- ICC) presser, A, is secured, which may be a hydraulic block-presser, screw device, or any other device for exertlng a pressure on the block of wood in the box for the purpose of pressing said block of wood upon the stones.

As the several block-pressers exert a great pressure on said revolving frame, the same must be suitably supported and balanced, and in addition to the support it derives from the shaft 0, I have provided a circular track, I, on the bottom of the frame D, which track is beveled and runs on conical frictional wheels I-I, mounted on shafts journaled in standards I) on the base of the frame of the machine. A greater or less number of said supportingwheels may be provided, as may be required. The vertical shaft 0 passes through a sleeve, J, formed of sections provided along their edges with lugs a, which are bolted together. Said sections are provided at about the middle of their height with a rib or collar, m, on

the outer surface, above which rib lugs b are formed on the outer surface of the sections. Said collar m rests on the base-plate G of the frame, and is surrounded by a rib or projection formed on the upper surface of said baseplate. Below said collar the shaft 0 is provided with an annular offset. 0, resting on the top edge of a collar, K, provided at its bottom with an outwardly-projecting flange, a',whieh fits closely in a recess, K, formed in a circular plate, K, having lugs 9, through which bolts L are passed, which bolts are also passed through the base-plate G of the frame of the machine and are surrounded by braces L, nuts being screwed on the ends of said rods,whereby the plate KKis firmly and rigidly connected with the base of the machine.

A pipe, f, isoonnectcd with the recess K in the plate K for. the purpose of conducting water or oil into said recess. A ring shaped projection, K is provided on the plate K and forms a chamber above the recess K, which chamber is covered by a plate, b, having an opening through which the flange K projects. The pipe 0 is provided for conducting oil or water from said chamber. A packing-collar, d, is passed into a circular recess in the bottom of the ring K and surrounds the lower part of the shaft. The oil or water forced into the recess K of the ring K forms a cushion, on which the flange K of the sleeve rests, said flange fitting very closely on the recess K. As the shoulder 0 on the spindle or shaft 0 rests on the collar K, the spindle is thus supported by the above mentioned hydraulic cushion.

The operation is as follows: The blocks of wood are placed into the boxes 13, and are pressed against the revolving stone or abrading-surfaces by suitable devices. livered upon the abradiug surface,'whcreby the wood is converted into pulp, which flows into the gutter and is carried off. The wood. can be placed in the boxes in such a manner that the grain is parallel to the direction of the movements of the stone, or at any angle to the W'ater is dedirection of movement, according to the size quired. In place ofthegrinding-stones, emeryblocks or other suitable abrading devices may be provided.

Having thus described my invention,I claim as new and desire to secure by Letters Patent 1. A wood-pulp machine having its abrader mounted to revolve in the horizontal plane, said abrader being supported at different points by friction rollers, substantially as shown and described.

2. A wood-pulp machine constructed with its abrader mounted to revolve in the horizontal plane, a track on the under side of the abrader, and friction-rollers on which said abrader can run for thepurpose of supporting it in its revolutions, substantially as shown and described.

3. In a woodpulp machine, the combination, with an abrader mounted to revolve in the horizontal plane, of a shaft on which the abrader is mounted, and a hydraulic cushion forsupporting the shaft, substantially as shown and described. 7

4. In a wood-pulp machine, the combina tion, with a frame or wheel mounted to revolve in the horizontal plane, of grinding-stones or other abrading-pieces held on said wheel, a shaft on which the wheel is mounted, the shaft being provided with a shoulder, a flanged sleeve on which the shaft rests, and a ringprovided with a recess for receiving the flange of the sleeve, which recess contains oil or water for the purpose of forming a hydraulic cushion, substantially as shown and described.

a 5. A wood-pulp machine constructed with a revolving abrader havinga track on one side or surface, and frietion-wheels which run on the track of the abrader, substantially as shown and described.

6. In a wood-pulp machine, the combination, with ahorizont-al. revolving abrader, of a frame or casing surrounding the abrader, vertically-adjustable boxes on the frame or casing, which boxes serve to receive the blocks of wood, and prcsscrs, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

WARREN CURTIS. "Witnesses:

Osoiuz F. GUNZ, MARTIN PETRY.

IOf 

